Mark Fenhalls QC > Chambers of John Price QC and Cairns Nelson QC > London, England > Lawyer Profile

Chambers of John Price QC and Cairns Nelson QC
23 Essex Street
Mark Fenhalls photo


Mark is ranked as a leader at the bar in both crime and fraud in the last five editions of Chambers & Partners and The Legal 500. He prosecutes and defends the most serious and complex criminal cases. In recent years he has been advising companies and individuals facing investigations of alleged regulatory and/or criminal misconduct relating to their business activities.

Mark was Chairman of the Criminal Bar Association from September 2015 – September 2016.


Called 1992; Gray’s Inn.


Criminal Bar Association, Association of Regulatory and Disciplinary Lawyers, International Society for the Reform of Criminal Law. [In August 2001 he received the Society’s first “young lawyer of the year” award.


Rugby School; Cambridge University (1990 MA); London School of Economics (1991 MSc).

Lawyer Rankings

London Bar > Business and regulatory crime (including global investigations)

(Leading Silks) Ranked: Tier 3

Mark Fenhalls QC23 Essex StreetHis work includes significant SFO cases.

London Bar > Fraud: crime

23 Essex Street‘s members are best known for handling defence work across a spectrum of fraud matters, although the group also has a strong relationship with the Crown Prosecution Service’s Specialist Fraud Division and so frequently handles prosecution instructions. Recent cases include Richard Bentwood successfully defending the wife of the Westminster Council’s chief investment officer, who allegedly laundered £1m stolen by her husband from the council’s pension fund. Mark Fenhalls QC is chair of the Fraud Lawyers Association.

London Bar > Crime

(Leading Silks) Ranked: Tier 3

Mark Fenhalls QC23 Essex StreetHe has a track record of murder cases.